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Finding the Fourth Proportional to 476.69, 714.76 and 271.64

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Solution

The fourth proportional to 476.69, 714.76 and 271.64 is: 407.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    476.69 : 714.76 = 271.64 : x
  2. Step 2: Convert to fraction form
    476.69/714.76 = 271.64/x
  3. Step 3: Cross multiply
    476.69x = 714.76 × 271.64
  4. Step 4: Simplify right side
    476.69x = 194,158.51
  5. Step 5: Solve for x
    x = 194,158.51/476.69
  6. Step 6: Final answer
    x = 407.31

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.